Magnetization Reversal in Ferromagnetic Films Patterned with Antiferromagnetic Gratings of Various Sizes
Name
PhysRevApplied.4.054005.pdf
Size
2.24 MB
Format
Adobe PDF
Checksum (MD5)
94290b9823ec2a5d8216d88bde5078d4
Author(s)
Liu, Frank
Ross, Caroline A.
Date Issued
November 2015
Journal
Physical Review Applied
Publisher
American Physical Society
Citation
Liu, F., and C. A. Ross. “Magnetization Reversal in Ferromagnetic Films Patterned with Antiferromagnetic Gratings of Various Sizes.” Physical Review Applied 4, no. 5 (November 2015). © 2015 American Physical Society
Version
Final published version
Abstract
The magnetic switching behavior in continuous NiFe films patterned with IrMn gratings is investigated experimentally and with micromagnetic simulations. The samples made by a two-step deposition process consist of a 10-nm-thick NiFe layer on which is placed 10-nm-thick IrMn stripes with width from 100 to 500 nm and period from 240 nm to 1 μm. Exchange bias is introduced by field cooling in directions parallel or perpendicular to the IrMn stripes. The samples display a two-step hysteresis loop for higher stripe width and period, as the pinned and unpinned regions of the NiFe reverse independently but a one-step loop for lower stripe periods. The transition between these regimes is reproduced by micromagnetic modeling.
MIT Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
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DOI of Published Version
https://doi.org/10.1103/PhysRevApplied.4.054005
